CN206573514U - A kind of negative ion signals process circuit - Google Patents
A kind of negative ion signals process circuit Download PDFInfo
- Publication number
- CN206573514U CN206573514U CN201720013068.2U CN201720013068U CN206573514U CN 206573514 U CN206573514 U CN 206573514U CN 201720013068 U CN201720013068 U CN 201720013068U CN 206573514 U CN206573514 U CN 206573514U
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- China
- Prior art keywords
- signal
- wave filter
- circuit
- negative ion
- processing module
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Abstract
The utility model discloses a kind of negative ion signals process circuit; including signal input part, signal processing module and signal output part; signal processing module is electrically connected with by electrostatic discharge protective circuit of connecting with signal input part; electrostatic discharge protective circuit is connected with the first wave filter and signal amplification circuit respectively; signal amplification circuit output end electrically connects the input of the second wave filter and the 3rd wave filter parallel circuit; the output end electrical connection zeroing circuit of second wave filter and the 3rd wave filter, zeroing circuit electrically connects signal output part by A/D change-over circuits；The utility model internal circuit configuration is simple, old of reduction production, and detectable multi-signal, can be to electrostatic, the signal such as electromagnetic radiation as waves is handled, and antistatic, anti-electromagnetic interference, is improved detection accuracy, can be reflected the time of day of anion in air；And in negative ion signals processing module built-in signal amplifying circuit and filtering technique, accuracy of detection can be made higher, it is sensitiveer.
Description
Technical field
The utility model is related to a kind of signal processing circuit, specially a kind of negative ion signals process circuit, belongs to clothes
Hang a production technical field.
Background technology
The content of negative oxygen ion is the key of air quality quality in air, therefore, and negative ion generating device is just pretty so to be walked
Enter huge numbers of families；Do not see, can not touch due to the anion that negative ion generating device is produced, colorless and odorless.Only pass through
The negative ion testing equipment of specialty can just detect the negative ion concentration of generation and judge the working condition of negative ion generating device.
Existing anion test device is in test, to other signals, such as electrostatic in circuit, the signal progress such as electromagnetic radiation as waves
Processing, easily by electrostatic, electromagnetic interference, user is easily judged by accident in use, so can not reflect in air
The time of day of anion.
Utility model content
The technical problems to be solved in the utility model is to overcome existing anion test device in test, is not had in circuit
To other signals, such as electrostatic, the signal such as electromagnetic radiation as waves is handled, easily by electrostatic, and electromagnetic interference, user was using
The defect easily judged by accident in journey is there is provided a kind of negative ion signals process circuit, so as to solve the above problems.
In order to solve the above-mentioned technical problem, the utility model provides following technical scheme：
The utility model provides a kind of negative ion signals process circuit, including receives the signal input part of source signal, to letter
Signal processing module and the signal output part of output anion data signal that number input is handled, the signal transacting mould
Block includes some wave filters, signal amplification circuit, zeroing circuit and A/D change-over circuits, and wave filter includes the first wave filter, second
Wave filter and the 3rd wave filter, the input of the signal output part electrically connect the signal processing module, the signal transacting
Module is electrically connected with by electrostatic discharge protective circuit of connecting with the signal input part, and the electrostatic discharge protective circuit is filtered with first respectively
Ripple device and signal amplification circuit series connection, the signal amplification circuit output end electrically connects the second wave filter and the 3rd wave filter is in parallel
The output end electrical connection zeroing circuit of the input of circuit, the second wave filter and the 3rd wave filter, the zeroing circuit passes through A/D
Change-over circuit electrically connects signal output part.
As a kind of optimal technical scheme of the present utility model, first wave filter is used to measure anion analog frequency
Scope is 31.5Hz-8KHz.
As a kind of optimal technical scheme of the present utility model, it is pre- higher than second that second wave filter is used for rejection frequency
If the analog signal of value, second preset value is f0, and f0 ＜ 9.5KHz.
As a kind of optimal technical scheme of the present utility model, the 3rd wave filter is used for rejection frequency and is less than the first preset value
Analog signal, first preset value is f1, and 108MHz ＜ f1 ＜ 177.5MHz.
It is used as a kind of optimal technical scheme of the present utility model, the output of the second wave filter and the 3rd wave filter parallel circuit
End is connected with the resistance of the zeroing circuit.
The beneficial effect that the utility model is reached is：The utility model internal circuit configuration is simple, old of reduction production,
And detectable multi-signal, can be to electrostatic, the signal such as electromagnetic radiation as waves is handled, and antistatic, anti-electromagnetic interference, is improved
Detection accuracy, the time of day that anion in air can be reflected；And in the amplification of negative ion signals processing module built-in signal
Circuit and filtering technique, can make accuracy of detection higher, sensitiveer.
Brief description of the drawings
Accompanying drawing is used for providing further understanding to of the present utility model, and constitutes a part for specification, with this practicality
New embodiment is used to explain the utility model together, does not constitute to limitation of the present utility model.
In the accompanying drawings：
Fig. 1 is overall structure diagram of the present utility model；
Fig. 2 is signal processing module circuit diagram of the present utility model；
Label in figure：1st, signal input part；2nd, electrostatic discharge protective circuit；3rd, signal processing module；4th, signal output part；5th,
One wave filter；6th, the second wave filter；7th, the 3rd wave filter；8th, signal amplification circuit；9th, zeroing circuit；10th, A/D change-over circuits.
Embodiment
Preferred embodiment of the present utility model is illustrated below in conjunction with accompanying drawing, it will be appreciated that described herein excellent
Select embodiment to be merely to illustrate and explain the utility model, be not used to limit the utility model.
Embodiment：As shown in Figure 1-2, the utility model provides a kind of negative ion signals process circuit, including receives source letter
Number signal input part 1, the signal processing module 3 that is handled signal input part 1 and the letter for exporting anion data signal
Number output end 4, signal processing module 3 includes some wave filters, signal amplification circuit 8, zeroing circuit 9 and A/D change-over circuits 10,
Wave filter includes the first wave filter 5, the second wave filter 6 and the 3rd wave filter 7, the input electrical connection signal of signal output part 4
Processing module 3, signal processing module 3 is electrically connected with by electrostatic discharge protective circuit 2 of connecting with signal input part 1, electrostatic protection electricity
Road 2 is connected with the first wave filter 5 and signal amplification circuit 8 respectively, and the output end of signal amplification circuit 8 electrically connects the second wave filter 6
With the input of the parallel circuit of the 3rd wave filter 7, the output end electrical connection zeroing circuit of the second wave filter 6 and the 3rd wave filter 7
9, zeroing circuit 9 electrically connects signal output part 4 by A/D change-over circuits 10.
Further, the first wave filter 5 is used to measure anion analog frequency scope for 31.5Hz-8KHz, the second filtering
Device 6 is used for the analog signal that rejection frequency is higher than the second preset value, and the second preset value is f0, and f0 ＜ 9.5KHz, the 3rd filtering
Device 7 is used for the analog signal that rejection frequency is less than the first preset value, and the first preset value is f1, and 108MHz ＜ f1 ＜
The output end of 177.5MHz, the second wave filter 6 and the parallel circuit of the 3rd wave filter 7 is connected with the resistance of zeroing circuit 9.
Specifically, the utility model is when the air in the big certain space of collection of negative ion concentration detector, bear from
The signal input part 1 of sub- concentration detector is transferred signals in electrostatic discharge protective circuit 2, and electrostatic protection is carried out to whole circuit,
Prevent electrostatic hazard；Analog signal of the input signal after electrostatic protection passes through signal processing module 3, signal processing module 3
Input signal is passed into the first wave filter 5 first, the first wave filter 5 goes out the signal extraction in negative ion signals frequency range
Come, then again by signal amplification circuit 8, the signal for inputting a signal into end 1 is amplified, by the input signal after amplification
By the second wave filter 6 and the 3rd wave filter 7, by the second wave filter 6 and the 3rd wave filter 7 by the high frequency in amplified signal and
Low frequency signal is filtered out, and obtains most clearly amplifying circuit signal, connected the output end of amplified signal by zeroing circuit 9
Resistance is superimposed offset voltage, source signal is compensated, to suppress the null offset of signal source and the null offset of the amplifier；Then
The signal after compensation is transformed into data signal using A/D change-over circuits 10, and by the negative ion signals of data signal
Send signal output part 4 after reason to, signal output part 4 shows negative ion electrospray signal on a display screen.
The utility model internal circuit configuration is simple, old of reduction production, and detectable multi-signal, can to electrostatic,
The signals such as electromagnetic radiation as waves are handled, antistatic, anti-electromagnetic interference, improve detection accuracy, can reflect in air bear
The time of day of ion；And in the built-in signal amplifying circuit of negative ion signals processing module 3 and filtering technique, detection essence can be made
Du Genggao is sensitiveer.
Finally it should be noted that：Preferred embodiment of the present utility model is these are only, this practicality is not limited to
It is new, although the utility model is described in detail with reference to the foregoing embodiments, for those skilled in the art,
It can still modify to the technical scheme described in foregoing embodiments, or which part technical characteristic is carried out etc.
With replacement.It is all it is of the present utility model spirit and principle within, any modification, equivalent substitution and improvements made etc. all should be included
Within protection domain of the present utility model.
Claims (5)
1. a kind of negative ion signals process circuit, including receive the signal input part (1) of source signal, signal input part (1) is entered
The signal processing module (3) of row processing and the signal output part (4) for exporting anion data signal, the signal processing module
(3) some wave filters, signal amplification circuit (8), zeroing circuit (9) and A/D change-over circuits (10) are included, wave filter includes first
Wave filter (5), the second wave filter (6) and the 3rd wave filter (7), it is characterised in that the input electricity of the signal output part (4)
The signal processing module (3) is connected, the signal processing module (3) passes through electrostatic discharge protective circuit of connecting (2) and the signal
Input (1) is electrically connected with, and the electrostatic discharge protective circuit (2) is gone here and there with the first wave filter (5) and signal amplification circuit (8) respectively
Connection, signal amplification circuit (8) output end electrically connects the input of the second wave filter (6) and the 3rd wave filter (7) parallel circuit
The output end electrical connection zeroing circuit (9) of end, the second wave filter (6) and the 3rd wave filter (7), the zeroing circuit (9) passes through
A/D change-over circuits (10) electrical connection signal output part (4).
2. a kind of negative ion signals process circuit according to claim 1, it is characterised in that first wave filter (5)
For measuring anion analog frequency scope for 31.5Hz-8KHz.
3. a kind of negative ion signals process circuit according to claim 1, it is characterised in that second wave filter (6)
It is higher than the analog signal of the second preset value for rejection frequency, second preset value is f0, and f0 ﹤ 9.5KHz.
4. a kind of negative ion signals process circuit according to claim 1, it is characterised in that the 3rd wave filter (7) is used for
Rejection frequency is less than the analog signal of the first preset value, and first preset value is f1, and 108MHz ﹤ f1 ﹤ 177.5MHz.
5. a kind of negative ion signals process circuit according to claim 1, it is characterised in that the second wave filter (6) and
Three wave filters (7) parallel outputs are connected with the resistance of the zeroing circuit (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720013068.2U CN206573514U (en) | 2017-01-05 | 2017-01-05 | A kind of negative ion signals process circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720013068.2U CN206573514U (en) | 2017-01-05 | 2017-01-05 | A kind of negative ion signals process circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206573514U true CN206573514U (en) | 2017-10-20 |
Family
ID=60060372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720013068.2U Expired - Fee Related CN206573514U (en) | 2017-01-05 | 2017-01-05 | A kind of negative ion signals process circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206573514U (en) |
-
2017
- 2017-01-05 CN CN201720013068.2U patent/CN206573514U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171020 Termination date: 20210105 |